lighthouse (n.)
- alarm
- alarum
- alert
- barbican
- beacon
- belfry
- belvedere
- bleachers
- bookmark
- bridge
- buzzer
- cairn
- campanile
- colossus
- column
- cupola
- derrick
- direction
- dome
- foghorn
- gallery
- gazebo
- grandstand
- guidance
- hooter
- horn
- landmark
- lantern
- lightship
- lookout
- loophole
- mark
- marker
- mast
- menhir
- milepost
- milestone
- minaret
- monument
- obelisk
- observatory
- outlook
- overlook
- pagoda
- peephole
- pharos
- pilaster
- pillar
- pinnacle
- platform
- pole
- pylon
- pyramid
- ringside
- shaft
- siren
- skyscraper
- spire
- standpipe
- steeple
- stupa
- tocsin
- tope
- tour
- tower
- turret
- watchtower
- whistle
And o'er them the lighthouse looked lovely as hope,—
That star of life's tremulous ocean.
